Read e-book online Artificial Materials PDF

By Olivier Vanbesien(auth.)

ISBN-10: 1118562720

ISBN-13: 9781118562727

ISBN-10: 1848213352

ISBN-13: 9781848213357

This e-book addresses man made fabrics together with photonic crystals (PC) and metamaterials (MM).

The first half is dedicated to layout thoughts: detrimental permeability and permittivity for adverse refraction, periodic buildings, transformation optics.

The moment half issues workstation and MM in cease band regime: from cavities, publications to excessive impedance surfaces. irregular refraction, lower than one and destructive, in computer and MM are studied in a 3rd half, addressing super-focusing and cloaking.

Applications for telecommunications, lasers and imaging platforms also are explored.

Chapter 1 Definitions and ideas (pages 3–12):
Chapter 2 The Metamaterial strategy – Permeability and Permittivity Engineering (pages 13–35):
Chapter three Photonic Crystal process – Band hole Engineering (pages 37–57):
Chapter four Transformation Optics (pages 59–70):
Chapter five aspect and prolonged Defects in Photonic Crystals (pages 73–94):
Chapter 6 Routing units made up of Photonic Crystals (pages 95–119):
Chapter 7 unmarried unfavorable Metamaterials (pages 121–136):
Chapter eight Two?Dimensional Microwave Balanced Composite Prism (pages 139–155):
Chapter nine Metal?Dielectric fabrics – from the Terahertz to the obvious (pages 157–176):
Chapter 10 irregular Refraction in Photonic Crystals (pages 177–195):
Chapter eleven A Photonic Crystal Flat Lens at Optical Wavelength (pages 197–223):
Chapter 12 Wave?Controlling structures – in the direction of pass and Invisibility (pages 225–252):
Chapter thirteen Guiding, Filtering and Routing Electromagnetic Waves (pages 255–278):
Chapter 14 Antennas (pages 279–300):
Chapter 15 Optics: Fibers and Cavities (pages 301–320):
Chapter sixteen Detection, Imaging and Tomography structures (pages 321–340):

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Example text

Around the symmetry points X and M, the behavior is more complex, following the opening of the band gaps and the folding of the bands due to the periodicity of the crystal. However, in both cases, the second mode presents a negative slope when bordering the Brillouin zone (a/λ diminishes when the wave vector’s module increases); this effect could be at the source of negative refraction. 4) – near the limits of diffraction – in contradiction to the assumed definition of a so-called “metamaterial” regime.

If the quality factors are sufficient, we then obtain negative effective parameters. 12a. 12b, after a few phases of optimization. 5 at 500 GHz). 13, magnetic activity can be obtained for a dielectric cylinder of 30 µm in height and 34 µm in radius. 13. 14) can be calculated at this resonance. We then obtain a purely magnetic activity, the effective permittivity remaining constant in the Metamaterial Approach 33 frequency band studied. In contrast, the permeability follows a hyperbolic model with a magnetic plasma frequency in the range of 600 GHz and a frequency band ranging between 525 and 600 GHz when µeff is negative.

Can we extract significant effective parameters of n, z, ε or µ type and Photonic Crystal Approach 41 “homogenize” the crystal when periodicity is not very small compared to the wavelength? These questions generally remain partially open. 3 for the case of two-dimensional devices. 2. 1. General cases Photonic crystals, whether they are metallic, dielectric or metal-dielectric, can have various geometries. Whether they are one-, two- or three-dimensional, they are all perfectly periodic, so it is always possible to define the notion of a unit cell.

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Artificial Materials by Olivier Vanbesien(auth.)

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